If you’re craving comfort food with zero fuss, you’re going to adore this Crock Pot Chicken Alfredo Casserole Recipe. It’s creamy, cheesy, and downright cozy—plus, it practically makes itself while you get on with your day. I absolutely love how this turns out every time, and once you try it, it’ll quickly become a family favorite in your house too.

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Why You’ll Love This Recipe

Hands-Off Cooking: Toss everything in your crock pot and walk away—no stirring or babysitting needed.
Incredible Creamy Flavor: The Alfredo sauce partners perfectly with tender chicken and pasta for a rich, satisfying meal.
Family-Friendly Crowd Pleaser: My family goes crazy for this dish—it’s simple enough for weeknights but tasty enough for guests.
Customizable Ingredients: You can easily swap cheeses or add veggies to suit your tastes or what’s on hand.

A white plate holds one layer of light beige cooked penne pasta, topped with a thick layer of creamy white sauce mixed with shredded white meat and some small black specks, likely black pepper. The top layer consists of melted pale yellow cheese sprinkled with small green herb leaves. The plate sits on a white marbled surface next to a gold fork. Behind the plate, there is a stainless steel slow cooker with a digital display, a small white bowl with green herbs, and a small metal grater holding a block of pale yellow cheese. A folded blue and white striped cloth is on the left side. Photo taken with an iphone --ar 2:3 --v 7 - Crock Pot Chicken Alfredo Casserole, easy chicken Alfredo slow cooker, creamy chicken pasta bake, casserole recipes with chicken, make-ahead Alfredo dinner

Ingredients You’ll Need

Each ingredient in this Crock Pot Chicken Alfredo Casserole Recipe plays a big role in creating a hearty, creamy one-pot wonder. Grab quality Alfredo sauce and good cheese for the best flavor, and don’t skip the garlic—it really brings everything together.

Flat lay of a few boneless skinless chicken breasts cooked and shredded, a small mound of uncooked penne pasta, a small white bowl filled with creamy Alfredo sauce, a small white bowl of water, a small white bowl with minced garlic, two whole brown eggs with clean shells, a small white bowl of salt, a small white bowl of cracked black pepper, a generous pile of shredded mozzarella cheese, a smaller pile of grated parmesan cheese, and a few fresh sprigs of chopped parsley, all arranged symmetrically in simple white ceramic bowls and plates, placed on a clean white marble surface, soft natural light, photo taken with an iPhone, professional food photography style, fresh ingredients, white ceramic bowls, no bottles, no duplicates, no utensils, no packaging --ar 2:3 --v 7 --p awthu7i m7354615311229779997 - Crock Pot Chicken Alfredo Casserole, easy chicken Alfredo slow cooker, creamy chicken pasta bake, casserole recipes with chicken, make-ahead Alfredo dinner

Boneless skinless chicken breasts: Use cooked, shredded chicken for easy layering and even flavor throughout.
Alfredo sauce: I love using Bertoli brand for its rich, authentic taste that blends beautifully with the pasta.
Water: Adds moisture so the pasta cooks perfectly in the crock pot without drying out.
Minced garlic: A little garlic packs a punch, making the whole dish irresistible.
Salt and pepper: Essential seasonings to enhance the creamy Alfredo sauce and chicken.
Penne pasta: Use uncooked penne—the crock pot cooks it right in the sauce, saving you a step!
Mozzarella cheese: Shredded mozzarella melts beautifully, giving gooey, cheesy goodness in every bite.
Parmesan cheese: Adds a sharp, salty kick to round out the flavor.
Chopped parsley (optional): A fresh sprinkle on top just before serving adds color and a hint of brightness.

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Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

I love making this Crock Pot Chicken Alfredo Casserole Recipe my own by swapping out ingredients when I want to switch things up or adapt to what I have in the fridge. Feel free to experiment and make it your own!

Add Veggies: I often add chopped spinach or steamed broccoli for a pop of color and nutrition—my family hardly notices because it blends so well!
Spicy Kick: Tried stirring in a bit of red pepper flakes or Cajun seasoning one time, and it gave the dish a fun, spicy twist we all loved.
Dairy-Free Version: For friends with dietary restrictions, swapping Alfredo for a dairy-free sauce and using dairy-free cheese works surprisingly well.
Different Cheeses: Parmesan and mozzarella are our go-tos, but mixing in fontina or provolone gives it a nice depth of flavor.

How to Make Crock Pot Chicken Alfredo Casserole Recipe

Step 1: Combine the Sauce Mixture

Start by mixing your Alfredo sauce, water, minced garlic, salt, and pepper in a bowl. This creates the flavorful base that will soak into the pasta and chicken. I like to whisk it together well so the seasonings are evenly distributed—trust me, every bite deserves it!

Step 2: Mix in the Penne Pasta

Next, stir in the uncooked penne pasta to coat each piece with the creamy sauce. This ensures the pasta cooks perfectly in the Crock Pot without drying out, and it soaks up all that cheesy flavor while simmering. Don’t skip this step or you’ll end up with some dry noodles here and there.

Step 3: Layer It Up in the Crock Pot

Spray your 6-quart crock pot with non-stick spray to make cleanup easier. Then layer half of the Alfredo pasta mixture on the bottom, followed by half the shredded chicken. Sprinkle on 1 cup of mozzarella and about 1/8 cup parmesan cheese over the chicken. Repeat the layers—pasta mixture, chicken, mozzarella, and parmesan—until all ingredients are used.

Step 4: Cook Low and Slow

Put the lid on and cook on low for 2 ½ to 3 hours. This slow heat lets the pasta soften perfectly and flavors meld beautifully. I always keep the lid on tight to trap that steam—lifting it too often will lengthen cooking time and dry the dish out.

Step 5: Finish with Extra Cheese and Parsley

Once the cooking time’s up, remove the lid and sprinkle the final cup of mozzarella cheese over the top. Pop the lid back on just long enough for the cheese to melt into a gooey, irresistible topping. I like to finish with a sprinkle of fresh parsley for a dash of color and a little freshness before serving.

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Pro Tips for Making Crock Pot Chicken Alfredo Casserole Recipe

Use Shredded Pre-Cooked Chicken: To save time, I use store-bought rotisserie chicken—no need to cook chicken from scratch.
Don’t Overcook the Pasta: Keep an eye on your crock pot model’s heat intensity since pasta can go from perfectly tender to mushy quickly.
Add Liquid if Needed: If your sauce looks too thick halfway through cooking, carefully add a splash of water or chicken broth to keep things creamy.
Avoid Stirring Mid-Cook: Resist the urge to stir while it cooks—you want the layers to set nicely and the pasta to cook evenly.

How to Serve Crock Pot Chicken Alfredo Casserole Recipe

A white plate holds a serving of penne pasta covered in a creamy, pale off-white sauce. The pasta is mixed with small pieces of white meat and sprinkled with chopped green herbs on top. The plate is placed on a white marbled surface with small green herb leaves scattered around. Nearby, there is a white bowl filled with chopped green herbs and a block of pale yellow cheese on a metal grater. A gold-colored fork rests on a blue and white striped cloth to the right of the plate. photo taken with an iphone --ar 2:3 --v 7 - Crock Pot Chicken Alfredo Casserole, easy chicken Alfredo slow cooker, creamy chicken pasta bake, casserole recipes with chicken, make-ahead Alfredo dinner

Garnishes

I always top this casserole with a sprinkle of freshly chopped parsley—it adds a lovely pop of green and a little freshness that really cuts through the richness of the cheese. Sometimes, I also like to add a pinch of crushed red pepper flakes for a subtle heat that wakes up your taste buds.

Side Dishes

To balance the creamy casserole, I usually pair it with a crisp green salad dressed with lemon vinaigrette or a side of roasted vegetables like asparagus or green beans. Garlic bread or a crusty baguette are perfect for soaking up any leftover sauce—because who wants to waste even a drop?

Creative Ways to Present

For special occasions, I’ve served this casserole in individual ramekins for a charming, personalized touch. It also looks beautiful baked in a clear glass crock pot insert so your guests can admire those gooey layers before diving in. Plus, it’s great for potluck tables when you want to share the love.

Make Ahead and Storage

Storing Leftovers

I store my leftovers in an airtight container in the fridge and usually enjoy them within 3 days. The flavors deepen overnight, and reheating portions in the microwave or oven works wonderfully without losing creaminess.

Freezing

If you want to prep in advance, this casserole freezes pretty well before baking. Just assemble everything in a freezer-safe dish, cover tightly, and freeze for up to 2 months. When you’re ready, thaw overnight and then cook as instructed, adding a little extra time if needed.

Reheating

I usually reheat leftovers covered in the oven at 350°F (175°C) for about 15-20 minutes or until hot and bubbly. This helps retain the creamy texture better than the microwave for bigger portions, but the microwave is great for quick single servings.

FAQs

Can I use other types of pasta in this Crock Pot Chicken Alfredo Casserole Recipe?

Absolutely! While penne is great for holding the sauce, you can swap in other short pasta shapes like rotini, rigatoni, or even bowtie pasta. Just keep an eye on the cooking time since different pasta shapes may cook a little faster or slower.
Do I have to cook the chicken before adding it?

For best texture and to avoid dry chicken, I recommend using pre-cooked, shredded chicken. You can quickly poach, bake, or use rotisserie chicken from the store. Adding raw chicken could cause uneven cooking or dryness.
What if I don’t have Alfredo sauce on hand?

You can make a quick homemade Alfredo sauce using butter, cream, garlic, and Parmesan cheese if you’re feeling adventurous. Alternatively, some good quality jarred Alfredo sauces work just fine—just be sure it’s a creamy version, not a watery one.
Can I double this recipe for a bigger crowd?

Yes, you can double ingredients, but you’ll need a larger crock pot or to divide it into two batches. Also, cooking times may increase slightly, so check pasta tenderness before serving.
How can I make this recipe healthier?

Try using whole wheat or legume-based pasta for added fiber and protein, swap half-and-half for heavy cream in the Alfredo sauce, and add plenty of steamed vegetables like spinach or zucchini to boost nutrition without sacrificing flavor.

Final Thoughts

This Crock Pot Chicken Alfredo Casserole Recipe truly feels like a warm hug after a busy day. I love how easy it is to prep, and the way it fills the kitchen with comforting cheesy aroma is unbeatable. Whether you’re cooking for family, friends, or just yourself, this recipe is one of those winners that never disappoints. So, grab your slow cooker and give it a try—you’ll be glad you did!